Dry Vacuum Pump
MODEL TRM/TAM"TRIPAC " SERIESDRY VACUUM PUMPMODEL TRM/TAM
We have been manufacturing the vacuum pump model"TRM/TAM"for about 35 years. The dryvacuum pump is multi-stage Roots type. It is constructed as a three stage horizontal typewith intermediate heat exchangers. The vacuum pump can be operated completely in dry
condition at any suction pressure on the performance curve.

Wide operating range
This pump can be operated with wide suction pressure from atmosphere to 80
Pa〜260 Pa without mechanical booster. Tri-lobe design permits stableperformance at any suction pressure from atmosphere to shutt-off.

Clean effluent
The pump is sealant-free: therefore there is no contamination of the seal fluid

FEATURES

with the process gases, also there in no carryover of the seal fluid to the pumpexhaust.

Safe
Leak-tight pump mechanism and dry type feature that uses no oil or sealing
fluid for vacuuming limits operators exposure to leaking process gas orcontaminated oil.

Low maintenance
The "TRM"dry vacuum pump is designed for continuous, unattended operation
with infrequent maintenance.

APPLICATION
Vacuum distillation,
Medical devices,
Solvent recovery,Evaporation,Drying,
Vacuum refrigeration,

Dry Vacuum Pump
"TRM/TAM"Series

Polymer processing,
Pharmaceutical & Food industry,Special gases in Chemical industry.

The intermediate heat exchangers insure easy solvent recovery. The all pump components
are equipped together on a common frame. The pumping speed is from 2 ㎥ /min to 21 ㎥ /min.
Depending on customer's request, the special design vacuum pump is available with materialof stainless steel, ductile cast iron, and also high design pressure. "TAM " series iscombination model of dry vacuum pump and mechanical booster. By the use of mechanicalbooster, pumping speed and ultimate pressure can be increased as required.

PRINCIPLE
The vacuum pump has 3 stages internally and each stage is constructed with a Roots type pump.
The pump consists of two rotors having a three-lobe shapeand mounted to parallel shafts, while keeping a slight clearance against the inside wall of casing,and also between rotors. The compression function is as follows.

156234

1
2

The suction gas into the inlet of vacuum pump is
compressed by rotation of rotors.
The discharged gas is divided into two portions,one portion of gas flows into back-flow cooling port
and another portion flows into second stage.

3456The discharged gas from second stage is transferred into cooler.
A part of cooled gas flows into back-flow cooling portof second stage. The other part of gas is transferred to third stage.
The discharged gas from third stage is transferred into cooler.
A part of cooled gas flows into back-flow cooling port of third stage.
The other part of gas is discharged to atmosphere.

Inert gas purge
It is possible to provide the inert gas purge system to prevent process gas entering bearings and gear casing.

Drain tank
The drain tanks can be installed under heat exchanger.
The drain tanks works for condensate collection and removal from pump system.

CONFIGULATIONSThere are two kind of system of back-flow cooling for the third stage.
In the system 【Fig. 1】, the third stage compression is made bycooled internal gas through heat exchanger.
h the system 【Fig. 2】, the compression is made by introduction of atmospheric air

Back-flow from cooled internal gas【Fig.1】The vacuum pump system has 2 sets of heat exchanger under frameand compression at the third stage is made by cooled internal gas through heat exchanger.
Mechanical seal is provided at the drive shaft end.
OUTLET
INLET
1ST.STAGE

2ND.STAGE

3RD.STAGE

SILENCERDRY VACUUM PUMPHEAT EXCHANGER

Back-flow from atmospheric air【Fig. 2】The vacuum pump system has one heat exchanger under frameand compression at the third stage is made by introduced atmospheric air.
Lip seal is provided at the drive shaft end.
INTAKE SILENCER

INLET

OUTLET
1ST.STAGE

2ND.STAGE

3RD.STAGE

SILENCERDRY VACUUM PUMPHEAT EXCHANGERDRY VACUUM PUMP MODEL TRM
Performance table
SUCTIONDISCHARGE

PUMPING SPEED

MOTOR

COOLING WATER CAPACITY

PUMPING SPEED(㎥/min)

MODEL

SUCTION PRESSURE

Dimension
MODEL(mm)DISCHARGE D2
JIS10 K FLANGE

SUCTION D1
JIS10 K FLANGECOOLING WATER
OUTLET (Rc-d)
COOLING WATER
INLET (Rc-d)

Dimensions may change without any notice.

DRY VACUUM PUMP MODEL TAM(TRM+Mechanical Booster)
Performance table
MODEL

SUCTION DISCHARGEMECH.
BOOSTERPUMPING SPEED MOTORMODELDRY VACUUM
PUMP

MOTOR

COOLING
WATER CAPACITY

PUMPING SPEED(㎥/min)

MODEL

SUCTION PRESSURE
Dimension
MODEL

SUCTION D1
JIS10 K FLANGEDISCHARGE D2
JIS10 K FLANGECOOLING WATER
OUTLET (Rc-d)
COOLING WATER
INLET (Rc-d)

Dimensions may change without any notice.

Unozawa Products
1.Rotary blower(Roots type)2.Rotary vacuum pump(Roots type)
3.Dry Vacuum pump
4.Mechanical booster
5.Water ring Vacuum pumpInquiries
When inquiring about Unozawa Dry vacuum pump,please furnish the following information:
1. Application:

Vacuum distillation, Solvent recovery, Vacuum drying etc.

2. Specification:

Pumping speed, Suction pressure, Suction gas temperature,Ultinate vacuum pressure

3. Handling gas:

Gas name,Corrosiveness4. Condition of installation:

Indoor or Outdoor

5. Driver and Utillity:

Motor type, Voltage, Frequency, Cooling water temperature,
Cooling water pressure

6. Accessories&Spare parts:

Required or not

7. Painting color:(Unozawa standard color is munsell 5B-4/1.5)

Head Office & Tamagawa Factory : 2-36-40, Shimomaruko,Ohta-ku Tokyo 146-0092 Japan
Tel. ＋81-3-3759-4191 Fax. ＋81-3-3759-4251
Sales office : Tel. ＋81-3-3759-8101 Fax. ＋81-3-3759-8105
Osaka sales : Sakurabashi yachiyo Bldg., 2-5-6 Umeda,Kita-ku, Osaka 530-0001 Japan
Tel, ＋81-6-6344-0747 Fax. ＋81-6-6344-2405

http://www.unozawa.co.jp
While every care has been taken in the preparation of data and dimensional drawings,
we reserve the right to change specifications without notice.